Last updated: January 18, 2025
Roraima, Brazil is characterized by a tropical rainforest climate, identified as Köppen-Geiger class Am. This region experiences a minimum temperature of 21°C (71°F) in July, rising to an average of 28°C (82°F) throughout the year. Notably, the temperature peaks at a maximum of 37°C (99°F) in November, highlighting the region's warm and humid conditions. These climatic attributes foster a diverse ecosystem, making Roraima a notable area for both ecological studies and environmental conservation.
In Roraima, Brazil, temperature patterns exhibit a distinct seasonal trend, characterized by consistently warm conditions throughout the year. The wet season from January to April sees temperatures generally fluctuating between a minimum of 22°C (72°F) and a maximum of 37°C (99°F), with March recording the highest average at 29°C (84°F). As the region transitions into the cooler months of June and July, temperatures slightly decline, reaching a minimum of 21°C (71°F) in July, while maximums remain stable around 33°C (92°F). By late summer, from August to November, temperatures rebound, with averages consistently returning to 29°C (84°F) and maximums peaking again at 37°C (99°F). This cyclical pattern underscores the tropical climate's influence, contributing to the region's rich biodiversity and ecological significance.
Boa Vista experiences a warm climate throughout the year, with July offering a mild minimum temperature of 21°C (71°F) and a peak in November reaching up to 37°C (99°F). For more detailed insights on the monthly temperatures, visit monthly temperatures in Boa Vista.
Roraima, Brazil, experiences a pronounced rainy season, particularly from April to July, when precipitation levels peak significantly. April sees the highest rainfall at 164 mm (6.5 in) over 15 days, marking a shift into the region’s wettest months. This trend continues into May, where rainfall escalates dramatically to 384 mm (15.1 in) across 28 days, followed closely by June with 360 mm (14.2 in). Such persistent rainfall fosters a lush environment, contributing to the region's extensive biodiversity.
As the rain subsides in late summer, precipitation levels begin to decline gradually, with October experiencing 71 mm (2.8 in) over 11 days, and November showing a moderate 135 mm (5.3 in) across 17 days. By the end of the year, December brings 75 mm (3.0 in) of rain, allowing for about 13 rainy days. The transition from intense rainfall to more sporadic showers in the latter months illustrates the seasonal variability in Roraima’s climate, shaping both its landscape and ecological dynamics.
In Roraima, Brazil, sunshine duration exhibits a notable seasonal pattern, with the months from March to October showcasing the highest levels of sunlight. March marks the beginning of an upward trend, with 307 hours of sunshine, peaking in August at 315 hours. This period not only signifies the transition into the region's sunnier months but also highlights the importance of solar energy potential during this time. The consecutive months of September and October maintain this trend, offering 312 hours and 314 hours of sunshine, respectively, allowing for ample opportunity for outdoor activities and agricultural practices.
As the year progresses into the late fall and winter months, sunshine hours gradually decline, reaching a low of 244 hours in June. This reduction continues into May, which sees 245 hours of sunlight, creating a transition phase before the sun begins to re-emerge. Despite this dip in sunshine, December brings back improved conditions with 308 hours, making the end of the year a favorable time for both sun-seekers and natural ecosystems to thrive. Overall, Roraima's fluctuating sunshine duration underscores the region's tropical climate, balancing periods of abundant brightness with shorter, cloudier intervals.
In Roraima, Brazil, the UV Index remains consistently high throughout the year, hovering primarily in the extreme exposure category. From January to April, the UV Index peaks, reaching 16 in both March and April, which reflects intense solar radiation and requires minimal exposure to avoid sunburn, with a burn time of just 10 minutes. Even in months like February and May, where the Index is slightly lower at 15 and 14, respectively, the extreme classification indicates that precautions against UV exposure are necessary year-round.
As the year progresses into the summer months, the UV Index begins to gradually decrease from its peak, settling at 12 in July before stabilizing around 13 for the remainder of the year, from August to December. However, despite this slight decline, the UV Index remains dangerously high, continuing to characterize the region's climate as one that demands careful sun protection. With each month featuring a burn time of just 10 minutes, residents and visitors alike are urged to take safety measures seriously, acknowledging Roraima's extreme UV conditions that persist across all seasons.
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In Roraima, Brazil, daylight duration remains relatively consistent throughout the year, reflecting the region's proximity to the equator. January begins with 11 hours of daylight, offering a glimpse of the pattern that follows. As February approaches, daylight increases to 12 hours, a duration that prevails for several months, from March through October. This steady amount of light promotes a balanced day-night cycle, supporting both natural ecosystems and human activities alike.
As the year transitions back into November and December, daylight duration slightly declines to 11 hours once more. This change signals the end of the longer daylight months, yet the variance remains minimal, maintaining approximately equal distribution of light year-round. This stability in daylight duration not only enhances Roraima’s tropical climate but also facilitates agricultural practices and outdoor life, as the predictability of day length allows residents to optimize their daily routines throughout the seasons.
Boa Vista, Brazil, features a tropical climate characterized by high temperatures year-round, ranging from a minimum of 21°C (71°F) in July to a maximum of 37°C (99°F) in March and November. The region experiences significant rainfall, peaking in May with 384 mm (15.1 in), while the dry season sees much lower precipitation. Despite the rain, Boa Vista enjoys ample sunshine, with August and October boasting up to 315 hours of sun. For more details on the climate in Boa Vista, check out this link: Boa Vista climate.
In conclusion, Roraima's climate is characterized by its tropical rainforest conditions, displaying distinct seasonal patterns in temperature, precipitation, sunshine duration, UV index, and daylight. With consistently warm temperatures and high humidity levels, the region experiences significant rainfall during the wet season, fostering a rich biodiversity that thrives in this environment. Coupled with ample sunshine and extreme UV exposure, residents and visitors must remain vigilant against the sun's powerful rays year-round. The stable daylight duration further enriches the region's appeal, allowing for predictable patterns in daily life and agricultural practices. Understanding these climatic elements is crucial for both ecological conservation and sustainable development in Roraima, ensuring the preservation of its unique natural heritage for future generations.